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Yield Strength Yield Strength |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Hardness Hardness |
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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Low-Carbon Steel 90° Angles
- Yield Strength: 36,000 psi
- Hardness: Not Rated (Medium)
- Heat Treatable: See Table
- Max. Hardness After Heat Treatment: Not Rated
- Specifications Met: See Table
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. Some of these angles can be surface hardened with heat treating.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Outside | Inside | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Ht. | Wd. | Heat Treatable | Specifications Met | Outside Corner Shape | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1/8" Wall Thick. | ||||||||||
| 1/2" | 1/2" | 3/8" | 3/8" | Yes | ASTM A36 | Round | 00000000 | |||
| 3/4" | 3/4" | 5/8" | 5/8" | Yes | ASTM A36 | Round | 00000000 | |||
| 1" | 1" | 7/8" | 7/8" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 1/4" | 1 1/4" | 1 1/8" | 1 1/8" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 1/2" | 1 1/2" | 1 3/8" | 1 3/8" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 3/4" | 1 3/4" | 1 5/8" | 1 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 2" | 1 1/2" | 1 7/8" | 1 3/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 2" | 2" | 1 7/8" | 1 7/8" | Yes | ASTM A36 | Round | 00000000 | |||
3/16" Wall Thick. | ||||||||||
| 1" | 1" | 13/16" | 13/16" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 1/4" | 1 1/4" | 1 1/16" | 1 1/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 1 1/2" | 1 1/2" | 1 5/16" | 1 5/16" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 3/4" | 1 3/4" | 1 9/16" | 1 9/16" | Yes | ASTM A36 | Round | 00000000 | |||
| 2" | 1 1/2" | 1 13/16" | 1 5/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 2" | 2" | 1 13/16" | 1 13/16" | Yes | ASTM A36 | Round | 00000000 | |||
| 2 1/2" | 2 1/2" | 2 5/16" | 2 5/16" | Yes | ASTM A36 | Round | 00000000 | |||
| 3" | 2" | 2 13/16" | 1 13/16" | Yes | ASTM A36 | Round | 000000 | |||
| 3" | 3" | 2 13/16" | 2 13/16" | Yes | ASTM A36 | Round | 00000000 | |||
1/4" Wall Thick. | ||||||||||
| 1" | 1" | 3/4" | 3/4" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 1/4" | 1 1/4" | 1" | 1" | Yes | ASTM A36 | Round | 0000000 | |||
| 1 1/2" | 1 1/2" | 1 1/4" | 1 1/4" | Yes | ASTM A36 | Round | 00000000 | |||
| 1 3/4" | 1 3/4" | 1 1/2" | 1 1/2" | Yes | ASTM A36 | Round | 0000000 | |||
| 2" | 1 1/2" | 1 3/4" | 1 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 2" | 2" | 1 3/4" | 1 3/4" | Yes | ASTM A36 | Round | 00000000 | |||
| 2 1/2" | 1 1/2" | 2 1/4" | 1 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 2 1/2" | 2" | 2 1/4" | 1 3/4" | Yes | ASTM A36 | Round | 000000 | |||
| 2 1/2" | 2 1/2" | 2 1/4" | 2 1/4" | Yes | ASTM A36 | Round | 00000000 | |||
| 3" | 2" | 2 3/4" | 1 3/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 3" | 2 1/2" | 2 3/4" | 2 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 3" | 3" | 2 3/4" | 2 3/4" | Yes | ASTM A36 | Round | 00000000 | |||
| 3 1/2" | 3 1/2" | 3 1/4" | 3 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 4" | 3" | 3 3/4" | 2 3/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 4" | 4" | 3 3/4" | 3 3/4" | Yes | ASTM A36 | Round | 00000000 | |||
| 5" | 3" | 4 3/4" | 2 3/4" | Yes | ASTM A36 | Round | 0000000 | |||
5/16" Wall Thick. | ||||||||||
| 3" | 2" | 2 11/16" | 1 11/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 3 1/2" | 3 1/2" | 3 3/16" | 3 3/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 4" | 4" | 3 11/16" | 3 11/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 5" | 3 1/2" | 4 11/16" | 3 3/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 6" | 3 1/2" | 5 11/16" | 3 3/16" | Yes | ASTM A36 | Round | 0000000 | |||
| 6" | 4" | 5 11/16" | 3 11/16" | Yes | ASTM A36 | Round | 0000000 | |||
3/8" Wall Thick. | ||||||||||
| 2" | 2" | 1 5/8" | 1 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 2 1/2" | 2 1/2" | 2 1/8" | 2 1/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 3" | 2" | 2 5/8" | 1 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 3" | 3" | 2 5/8" | 2 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 4" | 3" | 3 5/8" | 2 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 4" | 4" | 3 5/8" | 3 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 5" | 3" | 4 5/8" | 2 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 5" | 5" | 4 5/8" | 4 5/8" | Yes | ASTM A36 | Round | 000000 | |||
| 6" | 4" | 5 5/8" | 3 5/8" | Yes | ASTM A36 | Round | 0000000 | |||
1/2" Wall Thick. | ||||||||||
| 2 1/2" | 2 1/2" | 2" | 2" | Yes | ASTM A36 | Round | 0000000 | |||
| 3" | 3" | 2 1/2" | 2 1/2" | Yes | ASTM A36 | Round | 0000000 | |||
| 4" | 4" | 3 1/2" | 3 1/2" | Yes | ASTM A36 | Round | 0000000 | |||
| 5" | 3" | 4 1/2" | 2 1/2" | Yes | ASTM A36 | Round | 0000000 | |||
| 5" | 5" | 4 1/2" | 4 1/2" | Yes | ASTM A36 | Round | 0000000 | |||
| 6" | 6" | 5 1/2" | 5 1/2" | Yes | ASTM A36 | Round | 0000000 | |||
5/8" Wall Thick. | ||||||||||
| 4" | 4" | 3 3/8" | 3 3/8" | Yes | ASTM A36 | Round | 0000000 | |||
| 6" | 6" | 5 3/8" | 5 3/8" | Yes | ASTM A36 | Round | 0000000 | |||
3/4" Wall Thick. | ||||||||||
| 4" | 4" | 3 1/4" | 3 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 5" | 3 1/2" | 4 1/4" | 2 3/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 6" | 4" | 5 1/4" | 3 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 7" | 4" | 6 1/4" | 3 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 8" | 6" | 7 1/4" | 5 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
| 8" | 8" | 7 1/4" | 7 1/4" | Yes | ASTM A36 | Round | 0000000 | |||
1" Wall Thick. | ||||||||||
| 6" | 6" | 5" | 5" | Yes | ASTM A36 | Round | 0000000 | |||
| 8" | 8" | 7" | 7" | Yes | ASTM A36 | Round | 0000000 | |||
3mm Wall Thick. | ||||||||||
| 30mm | 30mm | 27mm | 27mm | No | EN 10025-2 | Round | 0000000 | |||
4mm Wall Thick. | ||||||||||
| 20mm | 20mm | 16mm | 16mm | No | EN 10025-2 | Round | 0000000 | |||
| 40mm | 40mm | 36mm | 36mm | No | EN 10025-2 | Round | 0000000 | |||
5mm Wall Thick. | ||||||||||
| 30mm | 30mm | 25mm | 25mm | No | EN 10025-2 | Round | 0000000 | |||
| 50mm | 50mm | 45mm | 45mm | No | EN 10025-2 | Round | 0000000 | |||
6mm Wall Thick. | ||||||||||
| 40mm | 40mm | 34mm | 34mm | No | EN 10025-2 | Round | 0000000 | |||
| 50mm | 50mm | 44mm | 44mm | No | EN 10025-2 | Round | 0000000 | |||
| 60mm | 60mm | 54mm | 54mm | No | EN 10025-2 | Round | 0000000 | |||
| 70mm | 70mm | 64mm | 64mm | No | EN 10025-2 | Round | 0000000 | |||
Zinc-Galvanized Low-Carbon Steel 90° Angles
- Yield Strength: 36,000 psi
- Hardness: Rockwell B70 (Medium)
- Heat Treatable: No
- Specifications Met: ASTM A36
These 90° angles are zinc galvanized for good corrosion resistance. Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps and spacers.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Outside | Inside | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ht. | Ht. Tolerance | Wd. | Wd. Tolerance | Ht. | Wd. | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1/8" Wall Thick. (-0.008" to 0.008" Tolerance) | |||||||||
| 3/4" | -0.032" to 0.032" | 3/4" | -0.032" to 0.032" | 5/8" | 5/8" | 0000000 | |||
| 1" | -0.032" to 0.032" | 1" | -0.032" to 0.032" | 7/8" | 7/8" | 0000000 | |||
| 1 1/4" | -0.05" to 0.05" | 1 1/4" | -0.05" to 0.05" | 1 1/8" | 1 1/8" | 0000000 | |||
| 1 1/2" | -1/8" to 1/8" | 1 1/2" | -1/8" to 1/8" | 1 3/8" | 1 3/8" | 0000000 | |||
| 2" | -1/8" to 1/8" | 2" | -1/8" to 1/8" | 1 7/8" | 1 7/8" | 0000000 | |||
3/16" Wall Thick. (-0.008" to 0.008" Tolerance) | |||||||||
| 2" | -0.05" to 0.05" | 2" | -0.05" to 0.05" | 1 13/16" | 1 13/16" | 0000000 | |||
1/4" Wall Thick. (-0.008" to 0.008" Tolerance) | |||||||||
| 1 1/2" | -1/8" to 1/8" | 1 1/2" | -1/8" to 1/8" | 1 1/4" | 1 1/4" | 0000000 | |||
| 2" | -1/8" to 1/8" | 2" | -1/8" to 1/8" | 1 3/4" | 1 3/4" | 0000000 | |||
| 3" | -1/8" to 1/8" | 3" | -1/8" to 1/8" | 2 3/4" | 2 3/4" | 0000000 | |||
Low-Carbon Steel U-Channels
- Yield Strength: 36,000 psi
- Hardness: Not Rated (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Specifications Met: ASTM A36
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Outside | Inside | Corner Shape | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ht. | Ht. Tolerance | Wd. | Ht. | Wd. | Outside | Inside | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1/8" Wall Thick. (-0.01" to 0.01" Tolerance) | ||||||||||
| 3/8" | -0.063" to 0.063" | 3/4" | 1/4" | 1/2" | Square | Round | 0000000 | |||
| 1/2" | -0.063" to 0.063" | 1" | 3/8" | 3/4" | Square | Round | 0000000 | |||
| 3/4" | -0.063" to 0.063" | 1 1/2" | 5/8" | 1 1/4" | Square | Round | 0000000 | |||
| 1" | -0.063" to 0.063" | 2" | 7/8" | 1 3/4" | Square | Round | 0000000 | |||
3/16" Wall Thick. (-0.015" to 0.015" Tolerance) | ||||||||||
| 1" | -0.063" to 0.063" | 2" | 13/16" | 1 5/8" | Square | Round | 0000000 | |||
1/4" Wall Thick. (-0.02" to 0.02" Tolerance) | ||||||||||
| 5/8" | -0.063" to 0.063" | 2" | 3/8" | 1 1/2" | Square | Round | 0000000 | |||
0.273" Wall Thick. (-0.01" to 0.01" Tolerance) | ||||||||||
| 1.41" | -1/8" to 1/8" | 3" | 1.24" | 2.454" | Square | Round | 0000000 | |||
0.296" Wall Thick. (-0.015" to 0.015" Tolerance) | ||||||||||
| 1.584" | -1/8" to 1/8" | 4" | 1.4" | 3.408" | Square | Round | 0000000 | |||
0.32" Wall Thick. (-0.02" to 0.02" Tolerance) | ||||||||||
| 1 3/4" | -1/8" to 1/8" | 5" | 1.56" | 4.36" | Square | Round | 0000000 | |||
0.343" Wall Thick. (-0.02" to 0.02" Tolerance) | ||||||||||
| 1.92" | -1/8" to 1/8" | 6" | 1.72" | 5.314" | Square | Round | 0000000 | |||
Low-Carbon Steel T-Bars
- Yield Strength: 36,000 psi
- Hardness: Rockwell B65 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Specifications Met: ASTM A36
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Low-Carbon Steel H-Bars
- Yield Strength: 50,000 psi
- Hardness:
Inch sizes: Not Rated
Metric sizes: Rockwell B70 (Medium) - Heat Treatable:
Inch sizes: Yes
Metric sizes: No - Maximum Hardness After Heat Treatment: Not Rated
- Specifications Met:
Inch sizes: ASTM A992
Metric sizes: EN 10034
Made of stiff low-carbon steel to deflect less under load, these H-bars are commonly used in machine bases, construction, platforms, and frames. Because of its rigidity, low-carbon steel is the most commonly used material for H-bars. These H-bars are less likely to crack from welding than those made of higher-carbon steels, and easier to weld than I-beams because they have a straight flange instead of a radius flange. H-bars are stronger than I-beams, but also heavier.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Outside | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wall Thickness | Wall Thickness Tolerance | Height | Height Tolerance | Width | Width Tolerance | Inside Width | Minimum Temperature, °F | Straightness Tolerance | 3 ft., Lg. | 6 ft., Lg. | |
| 0.215" | Not Rated | 3.94" | -0.188" to 0.250" | 5.9" | -0.125" to 0.125" | 5.47" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.26" | Not Rated | 5.99" | -0.188" to 0.250" | 5.99" | -0.125" to 0.125" | 5.47" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.28" | Not Rated | 4" | -0.188" to 0.250" | 6.03" | -0.125" to 0.125" | 5.47" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.33" | Not Rated | 5.25" | -0.188" to 0.250" | 8.14" | -0.125" to 0.125" | 7.48" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.345" | Not Rated | 4.06" | -0.188" to 0.250" | 4.16" | -0.125" to 0.125" | 3.47" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.365" | Not Rated | 6.02" | -0.188" to 0.250" | 6.2" | -0.125" to 0.125" | 5.47" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.4" | Not Rated | 5.27" | -0.188" to 0.250" | 8.28" | -0.125" to 0.125" | 7.48" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.435" | Not Rated | 7.995" | -0.188" to 0.250" | 8" | -0.125" to 0.125" | 7.13" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.455" | Not Rated | 6.08" | -0.188" to 0.250" | 6.38" | -0.125" to 0.125" | 5.47" | Not Rated | 0.025" per ft. | 0000000 | ||
| 0.56" | Not Rated | 8.07" | -0.188" to 0.250" | 8.25" | -0.125" to 0.125" | 7.13" | Not Rated | 0.025" per ft. | 0000000 | ||
| 8mm | -1mm to 2mm | 96mm | -2.000mm to 3.000mm | 100mm | -1.000mm to 4.000mm | 84mm | 0° | 0.036" per ft. | 0000000 | ||
| 10mm | -1.5mm to 2.5mm | 100mm | -2.000mm to 3.000mm | 100mm | -1.000mm to 4.000mm | 80mm | 0° | 0.036" per ft. | 0000000 | ||
| 11mm | -1.5mm to 2.5mm | 120mm | -2.000mm to 3.000mm | 120mm | -2.000mm to 4.000mm | 98mm | 0° | 0.036" per ft. | 0000000 | ||
| 12mm | -1.5mm to 2.5mm | 140mm | -2.000mm to 3.000mm | 140mm | -2.000mm to 4.000mm | 116mm | 0° | 0.036" per ft. | 0000000 | ||
| 14mm | -1.5mm to 2.5mm | 180mm | -2.000mm to 3.000mm | 180mm | -2.000mm to 4.000mm | 152mm | 0° | 0.036" per ft. | 0000000 | ||
| 15mm | -1.5mm to 2.5mm | 200mm | -2.000mm to 4.000mm | 200mm | -2.000mm to 4.000mm | 170mm | 0° | 0.018" per ft. | 0000000 | ||
| 22.5mm | -2mm to 2.5mm | 360mm | -2.000mm to 4.000mm | 300mm | -4.000mm to 4.000mm | 255mm | 0° | 0.018" per ft. | 0000000 | ||
Low-Carbon Steel I-Beams
- Yield Strength: 50,000 psi
- Hardness: Not Rated
- Heat Treatable: Yes
- Specifications Met: ASTM A992
Made of rigid low-carbon steel, these I-beams are often used in construction, framing, lifting, and hoisting applications. Also known as mild steel, low-carbon steel is the most commonly used material for I-beams. It deflects less under load than medium- or high-carbon steel and is less likely to crack from welding. These I-beams have rounded corners, and are also known as American Standard I-beams. They weigh less than low-carbon steel H-bars, but are not as strong.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Outside | ||||||||
|---|---|---|---|---|---|---|---|---|
| Wall Thickness | Height | Height Tolerance | Width | Width Tolerance | Straightness Tolerance | 3 ft. Lg. | 6 ft. Lg. | |
| 0.26" | 3" | -0.063" to 0.094" | 2.33" | -0.125" to 0.125" | 0.025" per ft. | 0000000 | ||
| 0.293" | 4" | -0.063" to 0.094" | 2.663" | -0.125" to 0.125" | 0.025" per ft. | 0000000 | ||
| 0.359" | 6" | -0.063" to 0.094" | 3.332" | -0.125" to 0.125" | 0.0125" per ft. | 0000000 | ||
| 0.425" | 8" | -0.094" to 0.125" | 4.001" | -0.156" to 0.156" | 0.0125" per ft. | 0000000 | ||
Steel Hat Channel
In addition to creating space inside walls or ceilings—to prevent dampness or make room for insulation—these channels can also be used to level or resurface them. Their hat-like shape and flanges make them easy to mount on surfaces. Made of galvanized steel, all resist corrosion in damp environments.